OV - exec - Function hypre_BoomerAMGCoarsenPMIS.omp

	Function: hypre_BoomerAMGCoarsenPMIS.omp_outlined.13	Module: exec	Source: par_coarsen.c:2139-2142	Coverage (incl. loops): 0.02% \| (excl. loops): 0.00%

/home/eoseret/qaas_runs_ZEN5/173-989-6379/intel/AMG/build/AMG/AMG/parcsr_ls/par_coarsen.c: 2139 - 2142

--------------------------------------------------------------------------------

2139: #pragma omp parallel for private(i) HYPRE_SMP_SCHEDULE

2140:    for (i=0; i < num_variables; i++)

2141:    {

2142:      measure_array[i] = measure_array_temp[i];

0x259730 PUSH	%RBP

0x259731 MOV	%RSP,%RBP

0x259734 PUSH	%R15

0x259736 PUSH	%R14

0x259738 PUSH	%R12

0x25973a PUSH	%RBX

0x25973b SUB	$0x20,%RSP

0x25973f MOV	(%RDX),%R12

0x259742 TEST	%R12,%R12

0x259745 JLE	2598b7

0x25974b MOV	(%RDI),%EBX

0x25974d DEC	%R12

0x259750 MOV	%R8,%R15

0x259753 MOV	%RCX,%R14

0x259756 MOVQ	$0,-0x38(%RBP)

0x25975e MOVQ	$0x1,-0x40(%RBP)

0x259766 MOVL	$0,-0x2c(%RBP)

0x25976d MOV	%R12,-0x28(%RBP)

0x259771 SUB	$0x8,%RSP

0x259775 MOV	%EBX,%ESI

0x259777 LEA	-0x40(%RBP),%RAX

0x25977b LEA	0xae116(%RIP),%RDI

0x259782 LEA	-0x2c(%RBP),%RCX

0x259786 LEA	-0x38(%RBP),%R8

0x25978a LEA	-0x28(%RBP),%R9

0x25978e MOV	$0x22,%EDX

0x259793 PUSH	$0x1

0x259795 PUSH	$0x1

0x259797 PUSH	%RAX

0x259798 CALL	305fa0 <@plt_start@+0x90>

0x25979d ADD	$0x20,%RSP

0x2597a1 MOV	-0x28(%RBP),%RAX

0x2597a5 MOV	-0x38(%RBP),%RSI

0x2597a9 CMP	%R12,%RAX

0x2597ac CMOVL	%RAX,%R12

0x2597b0 MOV	%R12,-0x28(%RBP)

0x2597b4 CMP	%R12,%RSI

0x2597b7 JG	2598a6

0x2597bd MOV	(%R15),%RAX

0x2597c0 MOV	(%R14),%RCX

0x2597c3 MOV	%R12,%RDX

0x2597c6 SUB	%RSI,%RDX

0x2597c9 INC	%RDX

0x2597cc CMP	$0x4,%RDX

0x2597d0 JAE	2597da

0x2597d2 MOV	%RSI,%R8

0x2597d5 JMP	25988a

0x2597da CMP	$0x20,%RDX

0x2597de JAE	2597e4

0x2597e0 XOR	%EDI,%EDI

0x2597e2 JMP	259851

0x2597e4 LEA	0xc0(%RAX,%RSI,8),%R8

0x2597ec LEA	0xc0(%RCX,%RSI,8),%R9

0x2597f4 MOV	%RDX,%RDI

0x2597f7 AND	$-0x20,%RDI

0x2597fb XOR	%R10D,%R10D

0x2597fe XCHG	%AX,%AX

(611) 0x259800 VCVTQQ2PD	-0xc0(%R8,%R10,8),%ZMM0

(611) 0x259808 VCVTQQ2PD	-0x80(%R8,%R10,8),%ZMM1

(611) 0x259810 VCVTQQ2PD	-0x40(%R8,%R10,8),%ZMM2

(611) 0x259818 VCVTQQ2PD	(%R8,%R10,8),%ZMM3

(611) 0x25981f VMOVUPD	%ZMM0,-0xc0(%R9,%R10,8)

(611) 0x259827 VMOVUPS	%ZMM1,-0x80(%R9,%R10,8)

(611) 0x25982f VMOVUPS	%ZMM2,-0x40(%R9,%R10,8)

(611) 0x259837 VMOVUPS	%ZMM3,(%R9,%R10,8)

(611) 0x25983e ADD	$0x20,%R10

(611) 0x259842 CMP	%R10,%RDI

(611) 0x259845 JNE	259800

0x259847 CMP	%RDI,%RDX

0x25984a JE	2598a6

0x25984c TEST	$0x1c,%DL

0x25984f JE	2598c4

0x259851 MOV	%RDX,%R9

0x259854 AND	$-0x4,%R9

0x259858 LEA	(%RAX,%RSI,8),%R10

0x25985c LEA	(%RSI,%R9,1),%R8

0x259860 LEA	(%RCX,%RSI,8),%RSI

0x259864 NOPW	%CS:(%RAX,%RAX,1)

(613) 0x259870 VCVTQQ2PD	(%R10,%RDI,8),%YMM0

(613) 0x259877 VMOVUPD	%YMM0,(%RSI,%RDI,8)

(613) 0x25987c ADD	$0x4,%RDI

(613) 0x259880 CMP	%RDI,%R9

(613) 0x259883 JNE	259870

0x259885 CMP	%R9,%RDX

0x259888 JE	2598a6

0x25988a DEC	%R8

0x25988d NOPL	(%RAX)

(612) 0x259890 VCVTSI2SDQ	0x8(%RAX,%R8,8),%XMM4,%XMM0

(612) 0x259897 VMOVSD	%XMM0,0x8(%RCX,%R8,8)

(612) 0x25989e INC	%R8

(612) 0x2598a1 CMP	%R12,%R8

(612) 0x2598a4 JL	259890

0x2598a6 LEA	0xae003(%RIP),%RDI

0x2598ad MOV	%EBX,%ESI

0x2598af VZEROUPPER

0x2598b2 CALL	305fb0 <@plt_start@+0xa0>

0x2598b7 ADD	$0x20,%RSP

0x2598bb POP	%RBX

0x2598bc POP	%R12

0x2598be POP	%R14

0x2598c0 POP	%R15

0x2598c2 POP	%RBP

0x2598c3 RET

0x2598c4 ADD	%RDI,%RSI

0x2598c7 JMP	2597d2

0x2598cc NOPL	(%RAX)

Coverage (%)	Name	Source Location	Module
►97.00+	__kmp_invoke_microtask		libomp.so
○	__kmp_invoke_task_func		libomp.so
○	__kmp_launch_thread		libomp.so
○	__kmp_launch_worker(void*)		libomp.so
○	start_thread		libc.so.6
○	__GI___clone3		libc.so.6
►3.00+	__kmp_invoke_microtask		libomp.so
○	__kmp_invoke_task_func		libomp.so
○	__kmp_fork_call		libomp.so
○	__kmpc_fork_call		libomp.so
○	hypre_BoomerAMGCoarsenPMIS	par_coarsen.c:2145	exec
○	hypre_BoomerAMGSetup	par_amg_setup.c:601	exec
○	hypre_PCGSetup	pcg.c:234	exec

min	med	avg	max

Percentile Index	10	20	30	40	50	60	70	80	90	100
Value

min	med	avg	max

Percentile Index	10	20	30	40	50	60	70	80	90	100
Value

Path /

Average path: Display a virtual path defined by average values of all real paths

The code analyzed by CQA in that panel excludes loops and represents 0.00% of application time for run aocc_2

Source file and lines	par_coarsen.c:2139-2142
Module	exec

The function is defined in /home/eoseret/qaas_runs_ZEN5/173-989-6379/intel/AMG/build/AMG/AMG/parcsr_ls/par_coarsen.c:2139-2142.

Warnings:
Ignoring paths for analysis

gain
potential
hint
expert

Vectorization

Your function is probably not vectorized. Only 11% of vector register length is used (average across all SSE/AVX instructions). By vectorizing your function, you can lower the cost of an iteration from 10.75 to 0.82 cycles (13.08x speedup).

Details

Store and arithmetical SSE/AVX instructions are used in scalar version (process only one data element in vector registers). Since your execution units are vector units, only a vectorized function can use their full power.

Workaround

Try another compiler or update/tune your current one
Make array accesses unit-stride:
- If your function streams arrays of structures (AoS), try to use structures of arrays instead (SoA): for(i) a[i].x = b[i].x; (slow, non stride 1) => for(i) a.x[i] = b.x[i]; (fast, stride 1)

Execution units bottlenecks

Found no such bottlenecks but see expert reports for more complex bottlenecks.

No data for this section

CALL instructions

Detected function call instructions.

Details

Calling (and then returning from) a function prevents many compiler optimizations (like vectorization), breaks control flow (which reduces pipeline performance) and executes extra instructions to save/restore the registers used inside it, which is very expensive (dozens of cycles). Consider to inline small functions.

unknown: 2 occurrences►
- /home/eoseret/qaas_runs_ZEN5/173-989-6379/intel/AMG/build/AMG/AMG/parcsr_ls/par_coarsen.c:2139
- /home/eoseret/qaas_runs_ZEN5/173-989-6379/intel/AMG/build/AMG/AMG/parcsr_ls/par_coarsen.c:2139

Complex instructions

Detected COMPLEX INSTRUCTIONS.

Details

These instructions generate more than one micro-operation and only one of them can be decoded during a cycle and the extra micro-operations increase pressure on execution units.

CMOVL: 1 occurrences►
- /home/eoseret/qaas_runs_ZEN5/173-989-6379/intel/AMG/build/AMG/AMG/parcsr_ls/par_coarsen.c:2140
LEA: 2 occurrences►
- /home/eoseret/qaas_runs_ZEN5/173-989-6379/intel/AMG/build/AMG/AMG/parcsr_ls/par_coarsen.c:2140
- /home/eoseret/qaas_runs_ZEN5/173-989-6379/intel/AMG/build/AMG/AMG/parcsr_ls/par_coarsen.c:2140

Type of elements and instruction set

No instructions are processing arithmetic or math operations on FP elements. This function is probably writing/copying data or processing integer elements.

Matching between your function (in the source code) and the binary function

The binary function does not contain any FP arithmetical operations. The binary function is loading 44 bytes. The binary function is storing 36 bytes.

General properties

nb instructions	85
nb uops	86
loop length	302
used x86 registers	14
used mmx registers	0
used xmm registers	0
used ymm registers	0
used zmm registers	0
nb stack references	4

Front-end

MACRO FUSION NOT POSSIBLE FIT IN UOP CACHE

micro-operation queue	10.75 cycles
front end	10.75 cycles

Back-end

	P0	P1	P2	P3	P4	P5	P6	P7	P8	P9	P10	P11	P12	P13	P14	P15
uops	7.67	7.67	7.67	7.67	7.67	7.67	3.75	3.75	3.75	3.75	0.00	0.00	0.00	0.00	0.00	0.00
cycles	7.67	7.67	7.67	7.67	7.67	7.67	3.75	3.75	3.75	3.75	0.00	0.00	0.00	0.00	0.00	0.00

Execution ports to units layout:

P0: ALU
P1: ALU
P2: ALU
P3: ALU, BRU
P4: ALU, BRU
P5: ALU, BRU
P6 (512 bits): store address, load
P7 (512 bits): store address, load
P8 (512 bits): store address, load
P9 (512 bits): store address, load
P10 (512 bits): VPU, DIV/SQRT
P11 (512 bits): VPU, DIV/SQRT
P12 (512 bits): VPU
P13 (512 bits): VPU
P14 (512 bits): FP store data
P15 (512 bits): FP store data

Cycles executing div or sqrt instructions

Cycles summary

Front-end	10.75
Dispatch	7.67
Overall L1	10.75

Vectorization ratios

all	4%
load	0%
store	0%
mul	NA (no mul vectorizable/vectorized instructions)
add-sub	0%
fma	NA (no fma vectorizable/vectorized instructions)
div/sqrt	NA (no div/sqrt vectorizable/vectorized instructions)
other	9%

Vector efficiency ratios

all	11%
load	9%
store	8%
mul	NA (no mul vectorizable/vectorized instructions)
add-sub	12%
fma	NA (no fma vectorizable/vectorized instructions)
div/sqrt	NA (no div/sqrt vectorizable/vectorized instructions)
other	13%

Cycles and memory resources usage

Assuming all data fit into the L1 cache, each call to the function takes 10.75 cycles. At this rate:

1% of peak load performance is reached (4.09 out of 256.00 bytes loaded per cycle (GB/s @ 1GHz))
2% of peak store performance is reached (3.35 out of 128.00 bytes stored per cycle (GB/s @ 1GHz))

Front-end bottlenecks

Performance is limited by instruction throughput (loading/decoding program instructions to execution core) (front-end is a bottleneck). By removing all these bottlenecks, you can lower the cost of an iteration from 10.75 to 7.67 cycles (1.40x speedup).

ASM code

In the binary file, the address of the function is: 259730

Instruction	Nb FU	P0	P1	P2	P3	P4	P5	P6	P7	P8	P9	Latency	Recip. throughput	Vectorization
PUSH %RBP	1	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
MOV %RSP,%RBP	1	0	0	0	0	0	0	0	0	0	0	0	0.17	N/A
PUSH %R15	1	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
PUSH %R14	1	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
PUSH %R12	1	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
PUSH %RBX	1	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
SUB $0x20,%RSP	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	1	0.17	scal (12.5%)
MOV (%RDX),%R12	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	3	0.25	scal (12.5%)
TEST %R12,%R12	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	1	0.17	scal (12.5%)
JLE 2598b7 <hypre_BoomerAMGCoarsenPMIS.omp_outlined.13+0x187>	1	0	0	0	0.33	0.33	0.33	0	0	0	0	1	0.50-1	N/A
MOV (%RDI),%EBX	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	3	0.25	scal (6.3%)
DEC %R12	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	1	0.17	scal (12.5%)
MOV %R8,%R15	1	0	0	0	0	0	0	0	0	0	0	0	0.17	N/A
MOV %RCX,%R14	1	0	0	0	0	0	0	0	0	0	0	0	0.17	N/A
MOVQ $0,-0x38(%RBP)	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	4	0.50	scal (6.3%)
MOVQ $0x1,-0x40(%RBP)	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	4	0.50	scal (6.3%)
MOVL $0,-0x2c(%RBP)	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	4	0.50	scal (6.3%)
MOV %R12,-0x28(%RBP)	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	4	0.50	scal (12.5%)
SUB $0x8,%RSP	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	1	0.17	scal (12.5%)
MOV %EBX,%ESI	1	0	0	0	0	0	0	0	0	0	0	0	0.17	N/A
LEA -0x40(%RBP),%RAX	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	1	0.25	N/A
LEA 0xae116(%RIP),%RDI	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	1	0.25	N/A
LEA -0x2c(%RBP),%RCX	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	1	0.25	N/A
LEA -0x38(%RBP),%R8	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	1	0.25	N/A
LEA -0x28(%RBP),%R9	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	1	0.25	N/A
MOV $0x22,%EDX	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	1	0.17	N/A
PUSH $0x1	1	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
PUSH $0x1	1	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
PUSH %RAX	1	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
CALL 305fa0 <@plt_start@+0x90>	2	0	0	0	0.33	0.33	0.33	0.25	0.25	0.25	0.25	0	0.50	N/A
ADD $0x20,%RSP	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	1	0.17	scal (12.5%)
MOV -0x28(%RBP),%RAX	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	3	0.25	N/A
MOV -0x38(%RBP),%RSI	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	3	0.25	N/A
CMP %R12,%RAX	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	1	0.17	scal (12.5%)
CMOVL %RAX,%R12	2	0.33	0.33	0.33	0.33	0.33	0.33	0	0	0	0	1	0.33	scal (12.5%)
MOV %R12,-0x28(%RBP)	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	4	0.50	scal (12.5%)
CMP %R12,%RSI	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	1	0.17	scal (12.5%)
JG 2598a6 <hypre_BoomerAMGCoarsenPMIS.omp_outlined.13+0x176>	1	0	0	0	0.33	0.33	0.33	0	0	0	0	1	0.50-1	N/A
MOV (%R15),%RAX	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	3	0.25	N/A
MOV (%R14),%RCX	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	3	0.25	N/A
MOV %R12,%RDX	1	0	0	0	0	0	0	0	0	0	0	0	0.17	N/A
SUB %RSI,%RDX	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	1	0.17	N/A
INC %RDX	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	1	0.17	N/A
CMP $0x4,%RDX	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	1	0.17	scal (12.5%)
JAE 2597da <hypre_BoomerAMGCoarsenPMIS.omp_outlined.13+0xaa>	1	0	0	0	0.33	0.33	0.33	0	0	0	0	1	0.50-1	N/A
MOV %RSI,%R8	1	0	0	0	0	0	0	0	0	0	0	0	0.17	scal (12.5%)
JMP 25988a <hypre_BoomerAMGCoarsenPMIS.omp_outlined.13+0x15a>	1	0	0	0	0.33	0.33	0.33	0	0	0	0	0	1	N/A
CMP $0x20,%RDX	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	1	0.17	scal (12.5%)
JAE 2597e4 <hypre_BoomerAMGCoarsenPMIS.omp_outlined.13+0xb4>	1	0	0	0	0.33	0.33	0.33	0	0	0	0	1	0.50-1	N/A
XOR %EDI,%EDI	1	0	0	0	0	0	0	0	0	0	0	0	0.25	N/A
JMP 259851 <hypre_BoomerAMGCoarsenPMIS.omp_outlined.13+0x121>	1	0	0	0	0.33	0.33	0.33	0	0	0	0	0	1	N/A
LEA 0xc0(%RAX,%RSI,8),%R8	2	0	0	0.50	0.50	0	0	0.25	0.25	0.25	0.25	2	0.50	N/A
LEA 0xc0(%RCX,%RSI,8),%R9	2	0	0	0.50	0.50	0	0	0.25	0.25	0.25	0.25	2	0.50	N/A
MOV %RDX,%RDI	1	0	0	0	0	0	0	0	0	0	0	0	0.17	N/A
AND $-0x20,%RDI	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	1	0.17	N/A
XOR %R10D,%R10D	1	0	0	0	0	0	0	0	0	0	0	0	0.25	scal (6.3%)
XCHG %AX,%AX	0	0	0	0	0	0	0	0	0	0	0	0	0.09	N/A
CMP %RDI,%RDX	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	1	0.17	scal (12.5%)
JE 2598a6 <hypre_BoomerAMGCoarsenPMIS.omp_outlined.13+0x176>	1	0	0	0	0.33	0.33	0.33	0	0	0	0	1	0.50-1	N/A
TEST $0x1c,%DL	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	1	0.17	N/A
JE 2598c4 <hypre_BoomerAMGCoarsenPMIS.omp_outlined.13+0x194>	1	0	0	0	0.33	0.33	0.33	0	0	0	0	1	0.50-1	N/A
MOV %RDX,%R9	1	0	0	0	0	0	0	0	0	0	0	0	0.17	N/A
AND $-0x4,%R9	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	1	0.17	N/A
LEA (%RAX,%RSI,8),%R10	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	1	0.25	N/A
LEA (%RSI,%R9,1),%R8	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	1	0.25	N/A
LEA (%RCX,%RSI,8),%RSI	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	1	0.25	N/A
NOPW %CS:(%RAX,%RAX,1)	0	0	0	0	0	0	0	0	0	0	0	0	0.09	N/A
CMP %R9,%RDX	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	1	0.17	scal (12.5%)
JE 2598a6 <hypre_BoomerAMGCoarsenPMIS.omp_outlined.13+0x176>	1	0	0	0	0.33	0.33	0.33	0	0	0	0	1	0.50-1	N/A
DEC %R8	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	1	0.17	scal (12.5%)
NOPL (%RAX)	0	0	0	0	0	0	0	0	0	0	0	0	0.09	N/A
LEA 0xae003(%RIP),%RDI	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	1	0.25	N/A
MOV %EBX,%ESI	1	0	0	0	0	0	0	0	0	0	0	0	0.17	N/A
VZEROUPPER	1	0	0	0	0	0	0	0	0	0	0	0	1	vect (25.0%)
CALL 305fb0 <@plt_start@+0xa0>	2	0	0	0	0.33	0.33	0.33	0.25	0.25	0.25	0.25	0	0.50	N/A
ADD $0x20,%RSP	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	1	0.17	scal (12.5%)
POP %RBX	1	0	0	0	0	0	0	0	0	0	0	1	0.33	N/A
POP %R12	1	0	0	0	0	0	0	0	0	0	0	1	0.33	N/A
POP %R14	1	0	0	0	0	0	0	0	0	0	0	1	0.33	N/A
POP %R15	1	0	0	0	0	0	0	0	0	0	0	1	0.33	N/A
POP %RBP	1	0	0	0	0	0	0	0	0	0	0	1	0.33	N/A
RET	1	0	0	0	0.33	0.33	0.33	0	0	0	0	1	0.50	N/A
ADD %RDI,%RSI	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	1	0.17	N/A
JMP 2597d2 <hypre_BoomerAMGCoarsenPMIS.omp_outlined.13+0xa2>	1	0	0	0	0.33	0.33	0.33	0	0	0	0	0	1	N/A
NOPL (%RAX)	0	0	0	0	0	0	0	0	0	0	0	0	0.09	N/A

The code analyzed by CQA in that panel excludes loops and represents 0.00% of application time for run aocc_2

Source file and lines	par_coarsen.c:2139-2142
Module	exec

The function is defined in /home/eoseret/qaas_runs_ZEN5/173-989-6379/intel/AMG/build/AMG/AMG/parcsr_ls/par_coarsen.c:2139-2142.

Warnings:
Ignoring paths for analysis

gain
potential
hint
expert

Vectorization

Details

Workaround

Try another compiler or update/tune your current one
Make array accesses unit-stride:
- If your function streams arrays of structures (AoS), try to use structures of arrays instead (SoA): for(i) a[i].x = b[i].x; (slow, non stride 1) => for(i) a.x[i] = b.x[i]; (fast, stride 1)

Execution units bottlenecks

Found no such bottlenecks but see expert reports for more complex bottlenecks.

No data for this section

CALL instructions

Detected function call instructions.

Details

unknown: 2 occurrences►
- /home/eoseret/qaas_runs_ZEN5/173-989-6379/intel/AMG/build/AMG/AMG/parcsr_ls/par_coarsen.c:2139
- /home/eoseret/qaas_runs_ZEN5/173-989-6379/intel/AMG/build/AMG/AMG/parcsr_ls/par_coarsen.c:2139

Complex instructions

Detected COMPLEX INSTRUCTIONS.

Details

These instructions generate more than one micro-operation and only one of them can be decoded during a cycle and the extra micro-operations increase pressure on execution units.

CMOVL: 1 occurrences►
- /home/eoseret/qaas_runs_ZEN5/173-989-6379/intel/AMG/build/AMG/AMG/parcsr_ls/par_coarsen.c:2140
LEA: 2 occurrences►
- /home/eoseret/qaas_runs_ZEN5/173-989-6379/intel/AMG/build/AMG/AMG/parcsr_ls/par_coarsen.c:2140
- /home/eoseret/qaas_runs_ZEN5/173-989-6379/intel/AMG/build/AMG/AMG/parcsr_ls/par_coarsen.c:2140

Type of elements and instruction set

No instructions are processing arithmetic or math operations on FP elements. This function is probably writing/copying data or processing integer elements.

Matching between your function (in the source code) and the binary function

The binary function does not contain any FP arithmetical operations. The binary function is loading 44 bytes. The binary function is storing 36 bytes.

General properties

nb instructions	85
nb uops	86
loop length	302
used x86 registers	14
used mmx registers	0
used xmm registers	0
used ymm registers	0
used zmm registers	0
nb stack references	4

Front-end

MACRO FUSION NOT POSSIBLE FIT IN UOP CACHE

micro-operation queue	10.75 cycles
front end	10.75 cycles

Back-end

	P0	P1	P2	P3	P4	P5	P6	P7	P8	P9	P10	P11	P12	P13	P14	P15
uops	7.67	7.67	7.67	7.67	7.67	7.67	3.75	3.75	3.75	3.75	0.00	0.00	0.00	0.00	0.00	0.00
cycles	7.67	7.67	7.67	7.67	7.67	7.67	3.75	3.75	3.75	3.75	0.00	0.00	0.00	0.00	0.00	0.00

Execution ports to units layout:

P0: ALU
P1: ALU
P2: ALU
P3: ALU, BRU
P4: ALU, BRU
P5: ALU, BRU
P6 (512 bits): store address, load
P7 (512 bits): store address, load
P8 (512 bits): store address, load
P9 (512 bits): store address, load
P10 (512 bits): VPU, DIV/SQRT
P11 (512 bits): VPU, DIV/SQRT
P12 (512 bits): VPU
P13 (512 bits): VPU
P14 (512 bits): FP store data
P15 (512 bits): FP store data

Cycles executing div or sqrt instructions

Cycles summary

Front-end	10.75
Dispatch	7.67
Overall L1	10.75

Vectorization ratios

all	4%
load	0%
store	0%
mul	NA (no mul vectorizable/vectorized instructions)
add-sub	0%
fma	NA (no fma vectorizable/vectorized instructions)
div/sqrt	NA (no div/sqrt vectorizable/vectorized instructions)
other	9%

Vector efficiency ratios

all	11%
load	9%
store	8%
mul	NA (no mul vectorizable/vectorized instructions)
add-sub	12%
fma	NA (no fma vectorizable/vectorized instructions)
div/sqrt	NA (no div/sqrt vectorizable/vectorized instructions)
other	13%

Cycles and memory resources usage

Assuming all data fit into the L1 cache, each call to the function takes 10.75 cycles. At this rate:

1% of peak load performance is reached (4.09 out of 256.00 bytes loaded per cycle (GB/s @ 1GHz))
2% of peak store performance is reached (3.35 out of 128.00 bytes stored per cycle (GB/s @ 1GHz))

Front-end bottlenecks

ASM code

In the binary file, the address of the function is: 259730

Instruction	Nb FU	P0	P1	P2	P3	P4	P5	P6	P7	P8	P9	Latency	Recip. throughput	Vectorization
PUSH %RBP	1	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
MOV %RSP,%RBP	1	0	0	0	0	0	0	0	0	0	0	0	0.17	N/A
PUSH %R15	1	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
PUSH %R14	1	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
PUSH %R12	1	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
PUSH %RBX	1	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
SUB $0x20,%RSP	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	1	0.17	scal (12.5%)
MOV (%RDX),%R12	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	3	0.25	scal (12.5%)
TEST %R12,%R12	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	1	0.17	scal (12.5%)
JLE 2598b7 <hypre_BoomerAMGCoarsenPMIS.omp_outlined.13+0x187>	1	0	0	0	0.33	0.33	0.33	0	0	0	0	1	0.50-1	N/A
MOV (%RDI),%EBX	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	3	0.25	scal (6.3%)
DEC %R12	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	1	0.17	scal (12.5%)
MOV %R8,%R15	1	0	0	0	0	0	0	0	0	0	0	0	0.17	N/A
MOV %RCX,%R14	1	0	0	0	0	0	0	0	0	0	0	0	0.17	N/A
MOVQ $0,-0x38(%RBP)	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	4	0.50	scal (6.3%)
MOVQ $0x1,-0x40(%RBP)	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	4	0.50	scal (6.3%)
MOVL $0,-0x2c(%RBP)	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	4	0.50	scal (6.3%)
MOV %R12,-0x28(%RBP)	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	4	0.50	scal (12.5%)
SUB $0x8,%RSP	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	1	0.17	scal (12.5%)
MOV %EBX,%ESI	1	0	0	0	0	0	0	0	0	0	0	0	0.17	N/A
LEA -0x40(%RBP),%RAX	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	1	0.25	N/A
LEA 0xae116(%RIP),%RDI	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	1	0.25	N/A
LEA -0x2c(%RBP),%RCX	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	1	0.25	N/A
LEA -0x38(%RBP),%R8	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	1	0.25	N/A
LEA -0x28(%RBP),%R9	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	1	0.25	N/A
MOV $0x22,%EDX	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	1	0.17	N/A
PUSH $0x1	1	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
PUSH $0x1	1	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
PUSH %RAX	1	0	0	0	0	0	0	0	0	0	0	1	0.50	N/A
CALL 305fa0 <@plt_start@+0x90>	2	0	0	0	0.33	0.33	0.33	0.25	0.25	0.25	0.25	0	0.50	N/A
ADD $0x20,%RSP	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	1	0.17	scal (12.5%)
MOV -0x28(%RBP),%RAX	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	3	0.25	N/A
MOV -0x38(%RBP),%RSI	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	3	0.25	N/A
CMP %R12,%RAX	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	1	0.17	scal (12.5%)
CMOVL %RAX,%R12	2	0.33	0.33	0.33	0.33	0.33	0.33	0	0	0	0	1	0.33	scal (12.5%)
MOV %R12,-0x28(%RBP)	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	4	0.50	scal (12.5%)
CMP %R12,%RSI	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	1	0.17	scal (12.5%)
JG 2598a6 <hypre_BoomerAMGCoarsenPMIS.omp_outlined.13+0x176>	1	0	0	0	0.33	0.33	0.33	0	0	0	0	1	0.50-1	N/A
MOV (%R15),%RAX	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	3	0.25	N/A
MOV (%R14),%RCX	1	0	0	0	0	0	0	0.25	0.25	0.25	0.25	3	0.25	N/A
MOV %R12,%RDX	1	0	0	0	0	0	0	0	0	0	0	0	0.17	N/A
SUB %RSI,%RDX	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	1	0.17	N/A
INC %RDX	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	1	0.17	N/A
CMP $0x4,%RDX	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	1	0.17	scal (12.5%)
JAE 2597da <hypre_BoomerAMGCoarsenPMIS.omp_outlined.13+0xaa>	1	0	0	0	0.33	0.33	0.33	0	0	0	0	1	0.50-1	N/A
MOV %RSI,%R8	1	0	0	0	0	0	0	0	0	0	0	0	0.17	scal (12.5%)
JMP 25988a <hypre_BoomerAMGCoarsenPMIS.omp_outlined.13+0x15a>	1	0	0	0	0.33	0.33	0.33	0	0	0	0	0	1	N/A
CMP $0x20,%RDX	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	1	0.17	scal (12.5%)
JAE 2597e4 <hypre_BoomerAMGCoarsenPMIS.omp_outlined.13+0xb4>	1	0	0	0	0.33	0.33	0.33	0	0	0	0	1	0.50-1	N/A
XOR %EDI,%EDI	1	0	0	0	0	0	0	0	0	0	0	0	0.25	N/A
JMP 259851 <hypre_BoomerAMGCoarsenPMIS.omp_outlined.13+0x121>	1	0	0	0	0.33	0.33	0.33	0	0	0	0	0	1	N/A
LEA 0xc0(%RAX,%RSI,8),%R8	2	0	0	0.50	0.50	0	0	0.25	0.25	0.25	0.25	2	0.50	N/A
LEA 0xc0(%RCX,%RSI,8),%R9	2	0	0	0.50	0.50	0	0	0.25	0.25	0.25	0.25	2	0.50	N/A
MOV %RDX,%RDI	1	0	0	0	0	0	0	0	0	0	0	0	0.17	N/A
AND $-0x20,%RDI	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	1	0.17	N/A
XOR %R10D,%R10D	1	0	0	0	0	0	0	0	0	0	0	0	0.25	scal (6.3%)
XCHG %AX,%AX	0	0	0	0	0	0	0	0	0	0	0	0	0.09	N/A
CMP %RDI,%RDX	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	1	0.17	scal (12.5%)
JE 2598a6 <hypre_BoomerAMGCoarsenPMIS.omp_outlined.13+0x176>	1	0	0	0	0.33	0.33	0.33	0	0	0	0	1	0.50-1	N/A
TEST $0x1c,%DL	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	1	0.17	N/A
JE 2598c4 <hypre_BoomerAMGCoarsenPMIS.omp_outlined.13+0x194>	1	0	0	0	0.33	0.33	0.33	0	0	0	0	1	0.50-1	N/A
MOV %RDX,%R9	1	0	0	0	0	0	0	0	0	0	0	0	0.17	N/A
AND $-0x4,%R9	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	1	0.17	N/A
LEA (%RAX,%RSI,8),%R10	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	1	0.25	N/A
LEA (%RSI,%R9,1),%R8	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	1	0.25	N/A
LEA (%RCX,%RSI,8),%RSI	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	1	0.25	N/A
NOPW %CS:(%RAX,%RAX,1)	0	0	0	0	0	0	0	0	0	0	0	0	0.09	N/A
CMP %R9,%RDX	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	1	0.17	scal (12.5%)
JE 2598a6 <hypre_BoomerAMGCoarsenPMIS.omp_outlined.13+0x176>	1	0	0	0	0.33	0.33	0.33	0	0	0	0	1	0.50-1	N/A
DEC %R8	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	1	0.17	scal (12.5%)
NOPL (%RAX)	0	0	0	0	0	0	0	0	0	0	0	0	0.09	N/A
LEA 0xae003(%RIP),%RDI	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	1	0.25	N/A
MOV %EBX,%ESI	1	0	0	0	0	0	0	0	0	0	0	0	0.17	N/A
VZEROUPPER	1	0	0	0	0	0	0	0	0	0	0	0	1	vect (25.0%)
CALL 305fb0 <@plt_start@+0xa0>	2	0	0	0	0.33	0.33	0.33	0.25	0.25	0.25	0.25	0	0.50	N/A
ADD $0x20,%RSP	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	1	0.17	scal (12.5%)
POP %RBX	1	0	0	0	0	0	0	0	0	0	0	1	0.33	N/A
POP %R12	1	0	0	0	0	0	0	0	0	0	0	1	0.33	N/A
POP %R14	1	0	0	0	0	0	0	0	0	0	0	1	0.33	N/A
POP %R15	1	0	0	0	0	0	0	0	0	0	0	1	0.33	N/A
POP %RBP	1	0	0	0	0	0	0	0	0	0	0	1	0.33	N/A
RET	1	0	0	0	0.33	0.33	0.33	0	0	0	0	1	0.50	N/A
ADD %RDI,%RSI	1	0.17	0.17	0.17	0.17	0.17	0.17	0	0	0	0	1	0.17	N/A
JMP 2597d2 <hypre_BoomerAMGCoarsenPMIS.omp_outlined.13+0xa2>	1	0	0	0	0.33	0.33	0.33	0	0	0	0	0	1	N/A
NOPL (%RAX)	0	0	0	0	0	0	0	0	0	0	0	0	0.09	N/A

Name	Coverage (%)	Time (s)
▼hypre_BoomerAMGCoarsenPMIS.omp_outlined.13–	0.02	0.01
○Loop 611 - par_coarsen.c:2142-2142 - exec	0.02	0.01
○Loop 612 - par_coarsen.c:2140-2142 - exec	0.00	0.00
○Loop 613 - par_coarsen.c:2142-2142 - exec	0.00	0.00

Report Configuration

Vectorization

Details

Workaround

Execution units bottlenecks

CALL instructions

Details

Complex instructions

Details

Type of elements and instruction set

Matching between your function (in the source code) and the binary function

General properties

Front-end

Back-end

Cycles summary

Vectorization ratios

Vector efficiency ratios

Cycles and memory resources usage

Front-end bottlenecks

ASM code

Vectorization

Details

Workaround

Execution units bottlenecks

CALL instructions

Details

Complex instructions

Details

Type of elements and instruction set

Matching between your function (in the source code) and the binary function

General properties

Front-end

Back-end

Cycles summary

Vectorization ratios

Vector efficiency ratios

Cycles and memory resources usage

Front-end bottlenecks

ASM code